New York Codes, Rules and Regulations
Title 22 - JUDICIARY
Subtitle A - JUDICIAL ADMINISTRATION
Chapter I - Standards and Administrative Policies
Subchapter A - Rules Of The Chief Judge
Part 16 - Court Appearances By Former Appellate Court Judges And Justices
Section 16.1 - Appearances by former Appellate Court judges and justices before the courts in which they were members

No former judge of the New York State Court of Appeals or former justice of the Appellate Divisions or Appellate Terms of the Supreme Court of the State of New York shall appear in person in the Appellate Court on which he or she served, or use or permit the use of his or her name on a brief filed in such court, within two years after having left such court. Nothing in this Part shall prohibit a law firm with which said judge is associated from appearing before a court and using the name of the firm on its papers consistent with that appearance.